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 Set 10
4 Votes
 Skier: A 65.0 kg skier with an initial speed of 12.0 m/s coasts up a 2.50 m high rise as shown in the figure. Find her final speed at the top (in m/s), given that the coefficient of friction between her skis and the snow is 0.0800. (Hint: Find the distance traveled up the incline assuming a straight-line path as shown in the figure.)Expired on
2018-12-12 12:52:00
15 Votes
 A ballistic pendulum is a device that is used to determine the muzzle velocity of the bullet shot by a hunting rifle, for example. As you know, the velocity of the bullet fired by a rifle dictates the distance it can travel. Those who reload their own bullets may find this device helpful. When a bullet is fired broadside into a suspended 4x4 chunk of wood, the wood swings up from rest by an angle of 60 degrees. For supporting wires in length of 50 cm, what is the woods change of potential energy? Together, the bullet and chuck of wood has a mass of 5 kg.Expired on
2018-12-05 12:52:04
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